CleanMyMac X 4.04 Helper Service input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in CleanMyMac X 4.04. It has been rated as critical. This impacts an unknown function of the component Helper Service. The manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2018-4043. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in CleanMyMac X 4.04. This issue affects an unknown function of the component Helper Service. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An exploitable privilege escalation vulnerability exists in the Clean My Mac X, version 4.04, helper service due to improper input validation. A user with local access can use this vulnerability to modify the file system as root. An attacker would need local access to the machine for a successful exploit.

The bug was discovered 01/02/2019. The weakness was disclosed 01/10/2019 (Website). The advisory is shared at talosintelligence.com. The identification of this vulnerability is CVE-2018-4043 since 01/02/2018. An attack has to be approached locally. The successful exploitation requires a simple authentication. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-129021, VDB-129020, VDB-129019 and VDB-129018 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/02/2018 🔍
01/02/2019 +365 days 🔍
01/10/2019 +8 days 🔍
01/10/2019 +0 days 🔍
01/11/2019 +1 days 🔍
04/28/2020 +473 days 🔍

Sourcesinfo

Advisory: talosintelligence.com
Status: Not defined

CVE: CVE-2018-4043 (🔍)
GCVE (CVE): GCVE-0-2018-4043
GCVE (VulDB): GCVE-100-129017
See also: 🔍

Entryinfo

Created: 01/11/2019 08:26
Updated: 04/28/2020 16:20
Changes: 01/11/2019 08:26 (56), 04/28/2020 16:20 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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